Duster



yNGV# H. E. BRANDT DUSTER Filed June 13. 192:5 v 5 sheets-sheet 1 Nov. 11 1924.

H. E. BRANDT Filed June 13; 192s 3 sheets-sheet? I N vE/v Tof?.

H. E. BRANDT Nov. 11 1924.

DUSTER 3 Sheets-Sheet 5 Fleld June 1 3, 1923 INVENTO/ vies ` Patented Nov. 41924. l

- A ImsuTino[s1-Miss* PArE'NroFslcs.

HENRY E. BRANIT, F N-'ORTH ST. PAUL, MINNESOTA, ASSIGNOR 'IO-THE DOBBINS MANUFACTURING COMPANY, 0F vNORTH ST. PAUL, MINNESOTA, A,COBPORATION OF SOUTH DAKOTA.

DUSTEB! Application filed June 13, 1923.' .Serial No. 645,196.

- To aZZ'ebhoz'tmaj/-cvwemf Be it known that I, HENRY E. Brumm, a Y-citizfen .of the United States, residing at North St. Paul, `in the county of Ramsey l and State of Minnesota, have invented cer--l tain new and useful Improvements in Dusters; and'I do hereby declare the following to be a-sfull, clear, and exact description of the invention, such as will enable. others makeanduse the same. i IThis invention relates to `a duster or, 1n other words, toa device adapted to blow 1n powders onto plants and other objects so that the'said powder is evenly and rapidly distributed. It is now a ycommon practice to so distribute insecticide powders, lime and other material onitrees and plants. A Itis van object of `thistinvention to provide such a duster ofsimplef and compact form and one which -c'an be easily carried and manipulated. f f n It is another object of the invention to form of agitating means for the material preferably comprising `two agitators together with a single means -for operating the same.

It is a'further objectV of the invention to provide such a duster having a receptacle adapted to contain material tobe distributed, which receptacle has a lower semi-cylindrical portion in which is disposed a revoluble agitator of simple, novel and eilicient 'construction, said semi-cylindrical portion of single operating means for` the duster which also operates the agitators abovewlescribed.

These and other objects and advantages 6.0 of the invention will be fully sa forth in the with the accom anying drawings -.in which lilge reference' c aractersrefer to the same skilled in the art to which it appertains to..

se'cticides'ior other materials in the form of provide s'uch a duster having therein a novel of theinvention illustrated, this receptacle cluding-a train of gears connected to thel "wall of t e portion 3. ,The sidewalls of `'following description made in cc'mnection.

v.parts throughout the dierent views, and l in which Fig. 1 is -a viewl in side 'elevation of the device;

Fig.2'is a topv plan view thereof;

Fig. 3 is a central vertical longitudinal v section through the deviceshown on an e'n-` larged scale; v

Fig. 4 is a central horizontal section vtaken longitudinally through ,a portion of the device indicated byline 4-4 of Fig. 1, shown on an enlarged scale; e ig. 5 is a view in front elevation of la portion of the device; v Fig. 6 is a verticalsectio'n taken substantially on the -line G-Gof Fig. 3,' as'indicated by the arrows; v l

v Fi 7 is av vertical section taken on the Fig. 12 is a. horizontal sectio taken on the line 12e-l2 of 11. 3

Referring to t'he drawings-the -devi-ce compmses a casing assembled to form a'unit and comprising as the parts thereof, a receptacle 1 adapted to contain the material the receptacle -being prov1ded with a series. of openings in the bottom'thereof and withV tobe distributed. While the receptacle can be of any desired form, in the embodiment is' s hownas having an 'upper cylindrical portion,'a intermediate portion 2 tapering' downwar y therefrom and a'lower` Vsubstan- 1 a `ti'ally semi-'cylindrical 5 i'tion 3, the axis of said latter portion eing .substantially horizontal.'- A shaft" 4 `extends axially' throughth'e' portion 3 and is journaled at 'i Y one end 'in a flanged bushing 5 suitably" secured b f solder vor other means to the side said portion 3 are formed with depressions 6 and 7 of general cylindrical shape extend- 'srsv pressions each have a groove extending upwardly therefrom, as illustrated in dotted linesk in Fig. 3 and the depression 6 is adapted to receive a washer 8 of felt or similar material which is held in place by the bushing 5. rlhe shaft 4 extends at its vother end through a. gear casing 9 `of flat elongated shape which is secured to the side wall of a fan casing 10'disposed at the rear of the receptacle l from which fan casing a tapered conduit 11 extends forwardly beneath the lower portion 3 ofthe receptacle, which conduit terminates in a cylindrical or other discharge nozzle 12. The outer end of shaft 4 is formed as a crank 13 provided with a suitable operating handle 14. The bottom wall of the 'portion 3 of thereceptacle is formed with a series of spaced parallel transverse slits 15 and at each end `of each `slit is a tongue 16 odset outwardly from the bottom wall of the portion 3 and integral therewith. These tongues 16 form the support and guiding means for a strip of material 17 which is also provided adjacent one end with a series of spaced 4transverse elongated slits 18. The strip 17 is thus heid against the bot-tom wall of the portion 3 so that the slits 15, can aline with the slits 18. 'llhe strip 17' is-adapted to be reciprocated to movesaid slitsout of or into alinement lor which purpose the strip has'struck up therefrom somewhat adjacent the end opposite the slits 18, a pair of lips 19 forming between them a slot. AL chamber is formed adjacent the front of the portion 3 of the receptacle by a wall 20 secured to the top of the conduit'11 at its lower end and having upwardly extending parallel sidewalls and bent at right angles into contact with the side of the portion 2 to form a top wall'. A small lcrank member 21 has its end journaled in the wall 20 and has secured thereto inside of said wall a cup-shaped disk member 23 shown in detail in Figs. 11 andl 12. This member has an eccentric flange 24 thereon and is connected to the crank 21, the flange 24 being disposed in the slot formed between the lugs 19 so4 that when the crank 21 is turned, the strip 17 will be reciprocated owing to the eccentric form of said Hangs 24. The strip 17 .is guided and securely held in proper position by a dat U- shaped plate 22 secured to the inside of wall 20 and extended over the upper end of strip 17 and disk 23. 'l` he outer side of the wall 20 is formed with a series of circumferentially spaced graduations -25 suitably numbered from 1 to 6 and a small plate 26 projects downwardly and outwardly from said wall adapted to form a stop for the `crank handle 21. The parts are so arranged that when the crank handle engages one side of said stop-as illustrated in Fig. 5, that the slits 18 will be out of alinement with the slits 15 so that no teria! Laisse@ pass through the bottom of the portion 3 of the receptacle. This position is marked as the Oli position on the wall 20.

rllhe shaft 4 has securedthereto an agitator 27 having la hub extending between the side walls of, the portion 2 of tlie'receptacle and secured to said shaft by a suitable set screw 28.v The agitator' comprises a disk disposed' substantially in a vertical plane transversely centrally of the receptacle 3, which disk is substantially of square form. Said disk has extending from each side thereof and at the rear corners thereof, relatively to its direction of rotation, rectangular blades 29. These blades are bent angularly laterally ad]acent said disk and have their terminal portions bentqind disposed in planes substantially at right angles to the plane of said disk, said blades being disposed substantially centrally relatively to said disk. A small shaft or rod 30 extends transversely of the upper portion of the receptacle 1 above and parallel to the shaft 4 and has -its outer end formed as a shortcrank, as shown vin Fig. 1, said rod being iournaled in the sidesuof said receptacle. Inside of the receptacle the rod is formed as or has secured thereto a bail member 31 having side portions converging downwardly in the portion 2 of the receptacle, which side portions are joined by an upwardly bent portion 32 extending over Yand in close proximity to the top of the blades 29 or agitator 27, the bail thus having somewhat pointed bends at each side extending slightly downwardly at each-side of the blades 29. The rod 32 also has rigidlysecured thereto a'ring 33 of smaller di Aameter than the cylindrical portion of the receptacle 1.

'llhe receptacle 1 is provided with a suitable flanged lid 34 fitting over the top thereof carrying a handle member 35. The said lid is held tightly in closed position by arms 36 bent to extend overthe top of lid and having offset portions 37 nivotally mounted in clips 38 riveted or otherwise secured to the outer sides of the receptacle 1.

rlllhe fan casing 10 is substantially cylindrical in form/and a shaft 40 extends axially therethrough having secured thereto a blade 41 of the fan, which blade is illustrated as a rectangular sheet of material bent to extend on both sides of said shaft. The side walls of the casing 1() are also formed with cylindrical depressions 42 and 43 concentric withk shaft v40, which depressions have grooves 44 extending upwardly therefrom. A washer 45 offelt ory similar material is disposed in the depression 42 and held therein by the flange of a flanged .bushing 46,. which flange is soldered or. otherwise suitably secured to the outer side of saidv wall, said bushing having one or. more small holes extending through' the lll@ 1 tact with is held in place by the side ofthe gear casing 9, which is disposed in contact with the wall of the fan casing. The bushing 48 has al flange vdisposed on the inside-of the wall of the gear casing 9 and this bushing forms the bearing in the other end of shaft 40. A pinion 49 is disposed on the ishaft 40 in' conthe outer side o the bushing 48 and-issecured to said shaft by a Cotter pin .50 extending through a 4slot therein and through Vsaid shaft. The end of shaft 40 abuts against the outer side of the casing 9.

' and said shaft is'thu held from longitudithe sides of the gear casing 9.' Said shaft nal movement in `one irection by. said casing. The pinion 49 meshes with a -gear y51 secured yto the hub. of a' pinion 52. This pinion is journaled on a shaft 53 secured' in 53 has a reduced portion at one end extending through and riveted into. a lsmall de- 9 .and has a reduced end extending through an aperture in a similar depression 55 in the opposite wall of casing 9. The pinion 52 mesheswith another gear 56 which is rig-- idly secured to the hub Aof a pinion carf-ried on a shaft '-o'r stud 58 secured in the sides-of casing 9 in the same manner assis i the shaft 53. Thepinion 57 inl turn meshes riveted or otherwise suit-- with a gearl 59 ably secured to-.a ,sleeve 60 which is jour-l naled in a bushing 61 havinga flange se- Vcured Aon the 1ns1de of casing 9 and extend- V f tion 3.

ing through an 'aperture therein. Said( sleeve is secured to the shaft 4 by a suitable cotter' pin 62 extending Atherethrough andthrough said shaft., .A sleeve of felt 68 `or similar material surrounds the shaft 4' between* the casing -9 l `and theV portion 3 of the lcasing and has one end pressedinto and disposed in the depression- 7 of saidpor- The shaft 4'hasy ag'rooveddisk 63 thereon 'eccentrically secured thereto and a rod 64 of a diameter to' be received.v in said groove extends substantially entirely aroun i one eide4 ofsaid disk rod 30; as clearly shown in Fig. 1.V

and -is pivotally con; nected at its .upper end to the end of crank 1 'egear casing 9 as clearly shown Vin i Fig.' 4 is made of` two similar flange sections It will-be noted -ppenings adjacent the'center thereof-fornider the top of the bracket 67 if desired..

In operation the material to beilistributed. will be placed v1n the receptaclel. This Inaterial will be in the formfof a, powder such as can be" eli'ectively blown and distributed or scattered by an air blast.` After the re- 'ceptacle 1 has been filled, the lid 34'will be -placed thereon and locked inv positionlby the arms 36.- The device can be lifted'loy"" the 8.54 handle 35 erably a supporting strapconnected as' 'described to the members 66 and 67 will-be usedwhich. can beplaced over the shoulder of the operator. .The `crank t21 ill nowbe turned' to give -the desiredopening through the slits 15 and 18 in thebottomjof the recep.- ta'cle 3. The device lwill then be in 'position for operation and will be'carried along and disposed adjacent the, articles two be dusted. The crank 13 will be turned by the `-h'andle-.`ff 14 and the'fan 41.will be rotated, athigh speed through the earsdisposed in the casing 9. As the cranklis turned, theagltator 27 will be rotated o `keep the materlal loosenedin the lower ortion3 .ofthe recepv taclevand to insure that the same--:will pass that the material will pass therethroughinto the conduit 11. The agitator therefore not only serves to Vloosennp material to prevent the same becoming packed but actsto feed the material through the bottom of the portion 3. As the shaft 4 is revolved the disk 63 will revolve andthe rod 64 will be reciprocated,since the-same actseas an eccentric strap so that the rod 30 129 d will be oscillated. The oscillation of rod; 30. willoscillate the bail 31.which will ths move v back and forth through the materialf .and l loose so 'as ,to insure that thev 1 lmaterial will pass freely'to the agitator 27. j1? 5 as'described, that the lower portions of the bail 31 come in' close prpxj imity to the edges of the blades 29 andextend slightly downward ateach side there of that any material tending to 'stick to 13 with the lid so locked and .pref-H arsenate of lead, are somewhat sticky and inice clined to become compacted. The action of the members/27 and 31 will act eiiciently to keep such powders loosened up and feeding in proper shape. As the bail 31 is oscillated the ring 33 will also' be oscillated in a substantially vertical plane so that the material will bekept loosened and moving downward in the receptacle. As the material moves into the conduit 31 the same is encountered by the air blast from the fan 41 which is revolved in the direction indicated by thearrows in Fig. 3. The blast passes out through the conduit 11, as indicated by the arrows in said ligure and the powder fed into .the conduit will be discharged from nozzle 12 in a finely divided shower so that the same will be evenly distributed on the desired ob jects. The provision of the depressions 6, 7 and'42 and 43 with the grooves leading therefrom form a simple and convenient means for lubricating the device at the neces` sary points. 'lhe nozzle of the oil can is placed in the groove and the oil then runs down the groove into the depression and into contact'with the felt washer placed in said depression. The oilis thus transferred by the felt lwasher toy the rotating parts either directly or through the holes in the bushings 46 and 48. 'lhe felt washers also act to exclude dust from. the interior of the casing and the flanged bushings 8, 46 and 61 which have their langes soldered or otherwise intimately connected with the casing form a perfectly tight closure. The parts are arranged`to be very compact andso that a minimum of parts will be required. The strip 17 and disk 23 are easily madefrom sheet metal and are arranged to form a simple and eiiicient adjusting means.' The device being formed'principally of light sheet ymetal is quite light in weight and yet 4the parts are soA arranged and connected that a very rugged and durable device is provided.

The device has been amply demonstrated in actual practice and found to be'very etlicient and successful and the same is now being commercially made and sold. Y 1

llt will, of course, be understood that various changes may be made in the form, details, arrangement and proportions of the parts without departing from the scope of applicantsinvention, which, generally stated, consists in a device capable of carrying out the objects above stated and such as shown and described and set forth in the appended claims.

' What is claimed is: f y

1. A dusting device having in combination, a receptacle for holding the material to be distributeda revoluble agitator in said receptacle mounted to rotate on a horizontal axis, an oscillating bail mounted on a horiterasse same, and portions extending downwardly slightly at each side of said agitator.

3. A dusting device having in combinaA tion, a receptacle for holding the material to be distributed, a revoluble agitator in said receptacle mounted to rotate on a horizontal axis, an oscillating bail mounted on a horizontal axis above said agitator, means for operating said agitator and bail, and an annular agitator disposed in a plane substantially perpendicular to the plane of said bail djacent the top of and movable with said ail.

4. A dusting device having in combination, a receptacle for holding the material to be distributed, a revoluble agitator in the lower portion thereof, a horizontal shaft on which said agitator is mounted projecting l at one side of said receptacle, a shaft extending across -said receptacley above said shaft and having a crank portion at its end, a depending bail mounted on said latter shaft and oscillatable across the top of said agitator, means for simultaneously operating said agitator and bail comprising a crank on said first mentioned shaft, an eccentric on said first mentioned shaft, and an eccentric sleeve on said eccentric connected to the crank portion of said second mentioned shaft. l

5. A dusting apparatus having in combination, a receptacle having a lower substantially semi-cylindrical portion, an agitator therein being formed as a disk disposed in a substantially vertical plane, and having substantially radially projectingy blades having their ends bent into planes substantially normal to the plane of said disk, and means for rotating said agitator.

6. 'lhe structure set forth in claim 5, said semi-cylindrical portion of said receptacle having a series of adjacent slots in its bottom extending longitudinally thereof and the said agitating blades being disposed so that the edges -of said blades are parallel to said slots and move in close proximity thereto. f

7. ln a dusting apparatus, the combination with a receptacle having a.lower substantially semi-cylindrical portion having a horizontal axis and having an a ertured bottom, of a shaft extending axial y through said lll@ iso

1,515,338 portion, 4a rotatable agitator centrally abc-ive' said shaft and parallel thereto, an os' Y mounted on said shaft comprising a substancillatin depending baill member havin tcle whereby a projecting tially square disk disposed in a substantially vertical plane and having rectangular blades vfrom the rear corners thereof, their terminals bentV into planes at right an les to the lane of said disk` and dispose substantia ly centrally transversely thereof, said blades being arranged to move in close proximity to the wall of said semi-cylindrical portion of the recepushng action; is 'ven the lades approach t eir lowsaid blades -having material as said est position. A,

8. The :structure set forth in 'clairn 7, a shaft extending centrally if said receptacle t right 'angles to its free en secured to said latter shaft and iav-` ing a portion .extending acrossl and-jdown- Ward at-each side ofthe terminal portion of said blades and-closely adjacentthereto.

9. The combination with a receptacle, of an agitator therein oomprisingan annular portion disposed substantially in a plane at ceptacle ing from hits sides and disposed in al plane substantially at right angles to saidv plane. 'In testimony whereof I affix my slgnature.

H E. BRANDT. e

254 the vertical axis of said reand oscillatable about a diametrical axis in sald plane and having a bail dependn 

